The AlphaLISA®SureFire®Ultra™ p-EGFR (Tyr1068) assay is a sandwich immunoassay for quantitative detection of phospho-EGFR (phosphorylated on Tyr1068) in cellular lysates using Alpha Technology.

In the AlphaLISA®SureFire®Ultra™ assay, Donor beads are coated with streptavidin to capture one of the antibodies, which is biotinylated. Acceptor beads are coated with a proprietary CaptSure™ agent that immobilizes the other antibody, labeled with a CaptSure™ tag. In the presence of phosphorylated protein, the two antibodies bring the Donor and Acceptor beads close together, generating signal. The amount of light emission is directly proportional to the amount of phosphoprotein present in the sample.